Case study:R Derwent Abutment & Buttress Removal

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Location: 54° 39' 38.42" N, 3° 28' 49.23" W

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Project overview

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Status	Complete
Project web site	http://westcumbriariverstrust.org
Themes	Hydromorphology
Country	England
Main contact forename	Ian
Main contact surname	Creighton
Main contact user ID
Contact organisation	West Cumbria Rivers Trust
Contact organisation web site	http://westcumbriariverstrust.org
Partner organisations	Environment Agency & Natural England
Parent multi-site project
This is a parent project encompassing the following projects	No

Old railway crossing prior to demolition

Project summary

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Abandoned railway criss crossed the R Derwent at three locations at this vicinity. The failing abutments and buttresses were removed summer 2013 to improve stream hydrology and morphology.

Monitoring surveys and results

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River morphology recovering well. No negative impacts from subsequent major flood events including 'Storm Desmond' December 2015

Lessons learnt

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Undertake a Level 2 archaeological survey prior to demolition Ensure landowners and fishery owners are on board in the early stages Evaluate likely channel impacts from proposed modifications prior to demolition so no significant supprises

Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information